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Afina-wow [57]
4 years ago
9

How to Factor 3x^2-12x-15

Mathematics
1 answer:
Natali5045456 [20]4 years ago
8 0
(3x-15)(x+1). it's the way is do it
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Find the area of this parallelogram<br>8cm<br>10cm<br>14cm​
Natasha2012 [34]

Answer:

112 cm^{2}

Step-by-step explanation:

A=bh

A=14*8

A=112

8 0
3 years ago
While studying the elk population, Dr. Gregory and her research assistants marked 42 elk. Later, they flew over the area and cou
mylen [45]
Based on the given conditions, formulate:
If the fraction is defined, the denominator cannot equal 0.:
Append the inequality as the domain:
Reduce the fraction:
Multiply both sides of the equation by the common denominator:
Reduce the fractions:
Swap the sides:
Divide both sides of the equation by the coefficient of variable:
Cross out the common factor:
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get the result:
Answer: x=560
4 0
2 years ago
What is the volume of a rectangular solid that is 40 centimeters long, 10 centimeters wide, and 5 centimeters high?
Arturiano [62]

The formula for the volume of a rectangular solid is V = L*W*H

Multiply out the length, width and height given: 40*10*5 = 400*5 = 2000

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6 0
4 years ago
A store sells Brazilian coffee for $10 per lb. and Columbian coffee for $14 per lb. If the store decides to make a 150-lb. blend
Artemon [7]

Answer:

The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

Step-by-step explanation:

Let "b" be the amount of Brazilian coffee, in pounds, required for the blend and "c" the amount of Colombian coffee required, in pounds.

Since there are two unknown variables a two-equation system is needed to solve the problem, we can set up one equation for weight and another for price as follows:

b+c=150\\10*b+14*c=11*150

Solve for "c" by multiplying the first equation by -10 and adding it to the second one:

b+c=150\\10b+14c -10b-10c=11*150 -(10*150)\\4c=150\\c = 37.5

Now, solve for b by replacing the value obtained into the first equation

b+c=150\\b= 150 - 37.5\\b=112.5

The store should use 112.5 pounds of Brazilian coffee and 37.5 pounds of Colombian cofee.

6 0
3 years ago
243 people out of 400 state that they like dogs. What percent is this ?
tatiyna
60.75%. Set up a proportion equation with 243 over 400 and x over 100. Then, cross multiply and devide.
6 0
3 years ago
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